Aluminum alloy shell, fast heat dissipation: aluminum alloy shell can quickly radiate heat while working, giving the hard disk a more comfortable working environment. M.2 dual protocol, stable quality, portable, convenient storage, fast transmission and file second transmission. M.2 dual-protocol hard disk box, supporting three kinds of interface hard disks. Extreme Speed Transmission - Compliant with USB 3.0 Gen 2 Standard write and read to 900MB/s. 1GB File Transfer in 1 Second - USB3.1 GEN2 interface, transmission to 10Gbps. Compatible with 4 Sizes of M.2 NVMe and SSD. Support maximum capacity 2TB hard disk. Specification:HY2071-J Colour:Grey Material:plastic+metal Package Contents: 1 * M.2 SSD Hard Drive Case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.